WICHMANN, Berlin / Germany                          (1930)
**********************************************************

S C A L E S   of  the    W I C H M A N N      Model »1870«
==========================================================
                                     ( one-sided only )
   A         X2
----------------------------------------------------------
   B         X2
   C         X
----------------------------------------------------------
   D         X

R E M A R K S :
==========================================================
This historic slide rule is made of mahogany with scales
on celluloid veneer. It came with a nice leather case.

Historical Remarks ...

On the back side of the slide rule is engraved   »A.W.F.«
It stands for "Ausschuss fuer wirtschaftliche Fertigung"
(~ "Commission for Efficient Production" )   Follow the
LINK in HISTORY to learn details about this manufacturer. 

impressum:
**********************************************************
© C.HAMANN   http://public.BHT-Berlin.de/hamann   10/11/07